Asia Biodegradation & Compostation Joint Venture & Partnerships Materials

Mitsubishi Chemical and PTT Create a New Bioplastic for Straws

Mitsubishi Chemical and PTT combine two types of biodegradable plastic to create a new material.

The new material will be made of Mitsubishi Chemical‘s polybutylene succinate (PBS) and PTT’s polylactic acid (PLA).

The new bioplastic is stronger than both plastics and will dissolve when exposed to air and water. The first applications will be straws and straw makers will be able to use the same molding equipment as they do to manufacture conventional straws.

The new material cost more than conventional plastic but because straws make up a tiny fraction of the price of a drink, any impact on consumer spending is expected to be small.

Polybutylene succinate (PBS) is a biodegradable plastic that decomposes into water and carbon dioxide with the microorganism under the soil. PBS has a high heat resistance compared to other biodegradable resins, and PBS has high compatibility with fibres.


  • The article was published in the “Nikkei”. But is it really new?
  • Mitsubishi Chemical and PTT have a 50-50 joint venture called PTT MCC Biochem company since 2016. One of their brand is the Bio-PBS used for paper coating, compound injection moulding and flexible packaging.
  • Will the new material fall under the PTT MCC Biochem? Probably.
  • Have the Japanese decided to change their marketing overnight?